TOTALFLOW straight through performance exhaust mufflers constructed with 304 stainless steel, our race exhaust mufflers designed to allow for maximum free flow?and horsepower. Whether you have a true dual exhaust system or not, our mufflers will make you master the flow & the sound of your exhaust system giving you the max dyno results. Our bullet race exhaust mufflers, resonators and glasspacks & can be a great addition to your on road super custom project. TOTALFLOW mufflers feature a straight through, perforated 304 stainless steel core wrapped with stainless steel mesh acoustic material, making it the ideal mufflers for your next custom exhaust project, allowing for a free flow through the pipe with very little restriction.